A shop keeper buys some books for Gh $80.00 If he had bought four more books for the same amount, each would have cost Ghe1.00 less. Find the total number of books he bought.​

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!

y=20x

: )

hope this